Simultaneous Nadir Overpasses (SNOs) Predictions
Prediction of SNOs between NOAA-21 and LANDSAT-9 Satellite Orbit:
Table of predicted SNOs for the next 14.0 days since TLE Epoch: 8/31/2025
| Index | Date (NOAA-21) | Time (NOAA-21) | Lat,Lon (NOAA-21) | SZA (NOAA-21 ) | Date (LANDSAT-9) | Time (LANDSAT-9) | Lat,Lon (LANDSAT-9) | SZA (LANDSAT-9 ) | Distance(km) | Time Diff (sec) |
| 1 | 09/03/2025 | 05:55:24 | 71.09, 85.93 | 63.63 | 09/03/2025 | 05:56:29 | 71.01, 88.68 | 63.48 | 99.80 | 65 |
| 2 | 09/03/2025 | 06:45:49 | -70.09,-105.14 | 117.40 | 09/03/2025 | 06:46:14 | -70.08,-105.08 | 117.43 | 2.89 | 25 |
| 3 | 09/03/2025 | 07:36:32 | 69.94, 62.40 | 62.46 | 09/03/2025 | 07:35:42 | 69.92, 62.35 | 62.44 | 3.07 | 50 |
| 4 | 09/05/2025 | 22:12:03 | 70.30,-157.00 | 63.79 | 09/05/2025 | 22:13:14 | 70.21,-156.64 | 63.68 | 16.86 | 71 |
| 5 | 09/05/2025 | 23:02:42 | -70.04, 10.72 | 116.48 | 09/05/2025 | 23:02:45 | -70.05, 10.75 | 116.47 | 1.61 | 3 |
| 6 | 09/05/2025 | 23:53:25 | 69.89, 178.26 | 63.39 | 09/05/2025 | 23:52:13 | 69.89, 178.17 | 63.39 | 3.21 | 72 |
| 7 | 09/08/2025 | 14:28:53 | 70.10, -40.91 | 64.57 | 09/08/2025 | 14:29:46 | 70.09, -40.94 | 64.56 | 1.79 | 53 |
| 8 | 09/08/2025 | 15:19:35 | -69.99, 126.57 | 115.53 | 09/08/2025 | 15:19:16 | -69.98, 126.54 | 115.54 | 1.86 | 19 |
| 9 | 09/08/2025 | 16:10:04 | 69.09, -64.82 | 63.57 | 09/08/2025 | 16:08:57 | 69.10, -67.01 | 63.62 | 86.71 | 67 |
| 10 | 09/11/2025 | 06:45:45 | 70.06, 74.92 | 65.55 | 09/11/2025 | 06:46:14 | 70.09, 74.94 | 65.57 | 3.18 | 29 |
| 11 | 09/11/2025 | 07:36:27 | -69.96,-117.60 | 114.55 | 09/11/2025 | 07:35:44 | -69.98,-117.57 | 114.53 | 3.13 | 43 |
| 12 | 09/13/2025 | 22:12:01 | -70.50, 22.71 | 113.00 | 09/13/2025 | 22:13:12 | -70.38, 23.61 | 113.14 | 36.13 | 71 |
| 13 | 09/13/2025 | 23:02:38 | 70.03,-169.25 | 66.54 | 09/13/2025 | 23:02:43 | 70.05,-169.22 | 66.55 | 2.54 | 5 |
| 14 | 09/13/2025 | 23:53:20 | -69.93, -1.78 | 113.56 | 09/13/2025 | 23:52:13 | -69.95, -1.73 | 113.54 | 2.80 | 67 |
Figure of NOAA-21 and LANDSAT-9 satellite orbits during SNOs since TLE Epoch: 8/31/2025
Download SNOs between NOAA-21 and LANDSAT-9 since TLE EPOCH: 08/31/2025 in txt file.
Historial Predications of SNOs between NOAA-21 and LANDSAT-9